Public bug reported:

Regular update including new kernel images. After reboot, sound was not
working and only the dummy output is shown.

Description:    Ubuntu 18.04.6 LTS
Release:        18.04
Package:        linux-image-4.15.0-177-generic (also happens with 180-generic

Expected: Sound to work, mic to work, sound card recognised in settings.
What happened instead: Dummy sound only available card, sound does not work, 
mic does not work

Tried: Restarting pulse audio, grepping lsmod for a sound card (nothing
listed)

Workaround: Everything works fine if I boot into 4.15.0-176-generic

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1976160

Title:
  Sound card not detected (Dummy Output) after update to kernel
  4.15.0-177-generic or 4.15.0.180-generic

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